Blowgun

ABSTRACT

A blowgun, which is used for firing bullets, comprising: a grip which is comprised a loading gate, a lead pipe, and a guiding flange; a trigger which is installed slidably at the grip, and a interference bar is installed at a part of the trigger, which is formed in the inner of the grip; a mouthpiece which is comprised a tubular part at one end thereof and a conical part at another end thereof; a barrel; a pushing bar which is installed slidably in the lead pipe and can be slid between the mouthpiece and the barrel; and a first recoil spring which is installed in the lead pipe; wherein the lead pipe is formed at the rear of the barrel and through inner of the grip; the loading gate is connected to the lead pipe; the guiding flange is installed in the grip; the tubular part is coupled together with the lead pipe; and during an interval the trigger being compressed, the interference bar of the trigger brings the pushing bar to approach the mouthpiece and to compress the first recoil spring until a chamber which is connected to the loading gate between the pushing bar and the barrel is enough for containing the bullet, and then the first recoil spring returns and brings the pushing bar to approach the barrel and to push the bullet into the barrel while the interference bar contacts with the guiding flange and releases the pushing bar.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a blowgun and particularly to a blowgunthat has a mouthpiece and a mechanism for firing bullets.

2. Description of the Prior Art

Conventional paintball guns are usually used in the war game which usespaintballs to act for real bullets and plays like a real war. In somesituations, a more safe game is desirous especially for children.However, most paintball guns used in the war game are not satisfied theaforesaid conditions and need inextricable protection to get in returnsafe of player or to prevent accident.

Thus the present invention is aimed to provide a blowgun that overcomesthe drawbacks of the paintball guns of the prior art, and the blowgunaccording to the present invention is beneficial to firing bullets.

SUMMARY OF THE INVENTION

In view of the aforesaid problems occurred to the conventional paintballguns, the present invention aims to provide a blowgun for war game,children or otherwise.

Another object of the invention is to provide a blowgun that has amouthpiece to provide high pressure and a mechanism to load bullets forfiring bullets by blowing.

Yet another object of the invention is to provide a blowgun that has atleast one magazine for containing bullets and a bracket for anchoringthe magazine.

To achieve the foregoing objects, the blowgun according to the inventioncomprising: a grip which is comprised a loading gate, a lead pipe, and aguiding flange; a trigger which is installed slidably at the grip, and ainterference bar is installed at a part of the trigger, which is formedin the inner of the grip; a mouthpiece which is comprised a tubular partat one end thereof and a conical part at another end thereof; a barrel;a pushing bar which is installed slidably in the lead pipe and can beslid between the mouthpiece and the barrel; and a first recoil springwhich is installed in the lead pipe; wherein the lead pipe is formed atthe rear of the barrel and through inner of the grip; the loading gateis connected to the lead pipe; the guiding flange is installed in thegrip; the tubular part is coupled together with the lead pipe; andduring an interval the trigger being compressed, the interference bar ofthe trigger brings the pushing bar to approach the mouthpiece and tocompress the first recoil spring until a chamber which is connected tothe loading gate between the pushing bar and the barrel is enough forcontaining the bullet, and then the first recoil spring returns andbrings the pushing bar to approach the barrel and to push the bulletinto the barrel while the interference bar contacts with the guidingflange and releases the pushing bar.

The pushing bar comprises a second contact part by which the pushing barcontacts with the interference bar.

The interference bar comprises a first contact part that an upper partthereof can be contacted with the second contact part and a lower partthereof can't be contacted with the interference bar; and during theinterval the trigger being compressed and when the chamber is enough forcontaining the bullet, the lower part of the interference bar contactswith the guiding flange.

The blowgun further comprises a second recoil spring which is installedin the grip for opposing being compressed of the trigger.

The blowgun further comprises a first holding part which is installed inthe barrel for blocking the bullet at the rear of the first holding partin the barrel.

The blowgun further comprises a second holding part which is installedat the rear of the first holding part in the barrel for restricting thebullet in the barrel between the first holding part and the secondholding part.

The front end and the rear end of the bullet in the barrel respectivelyare contacted with the first holding part and the second holding parttightly.

The first holding part and the second holding part both are O-rings.

The blowgun further comprises a sleeve which is installed at a frontpart of the mouthpiece and made of aluminum.

The blowgun further comprises a bracket, which is installed on thebarrel, and at least a magazine, which is installed on the bracket andcontains a plurality of bullets.

The blowgun further comprises a receiver which is installed on theloading gate and connected with the loading gate for holding themagazine.

In conclusion, the blowgun of the present invention can be operated tofire bullets by blowing and is safer than paintball guns of prior artsso that the blowgun of the present invention is more adaptable tochildren. Besides, the trigger can bring the pushing bar to a positionuntil a bullet is allowed to be loaded in the chamber, and the pushingbar can automatically push the bullet into the barrel by the firstrecoil spring. Therefore, the bullet is ready to fire as the triggerreaches the position where the bullet is loaded in the chamber so thatthe responding time is short and is helpful to the user.

The foregoing, as well as additional objects, features and advantages ofthe invention will be more readily apparent from the following detaileddescription, which proceeds with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an embodiment of the blowgun of theinvention;

FIG. 2 is an exploded view of an embodiment of the blowgun of theinvention;

FIG. 3 is a sectional view of the partial blowgun of the invention;

FIG. 4A to FIG. 4E are other sectional views of the partial blowgun ofthe invention; and

FIG. 5 is another sectional view of the partial blowgun of theinvention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

While the present invention is susceptible of embodiment in variousforms, there is shown in the drawings and will hereinafter be describeda presently preferred embodiment with the understanding that the presentdisclosure is to be considered an exemplification of the invention andis not intended to limit the invention to the specific embodimentillustrated.

Referring to FIGS. 1, 2 and 3 which respectively are a perspective view,an exploded view, and a sectional view of an embodiment of the blowgunof the invention, the blowgun 100 comprises a grip 110, a first recoilspring 117, a trigger 120, a mouthpiece 130, a barrel 140, and a pushingbar 150. The grip 110 has a loading gate 112 and a lead pipe 114, thelead pipe 114 is through inner of the grip 110, and the loading gate 112is connected to the lead pipe 114. The inner of the grip 110 has aguiding flange 116. The trigger 120 is installed slidably at the grip110, and a interference bar 122 is installed at a part of the trigger120, which is formed in the inner of the grip 110. The front of themouthpiece 130 is a tubular part 132 and the rear of the mouthpiece 130is a conical part 134. The tubular part 132 is coupled together with alead pipe 114 while the tubular part 132 can be overlapped with the leadpipe 114, and the conical part 134 is formed as a hopper for blowing.The lead pipe 114 is formed at the rear of the barrel 140, and thepushing bar 150 is installed slidably in the lead pipe 114 and can beslid between the mouthpiece 130 and the barrel 140. Besides, a bracket170 is installed on the barrel 140, and the bracket 170 holds aplurality of magazines 180. Each of the magazine 180 is constructed of aloading tube 182 and cap 184 and contains a plurality of bullets 70which are inserted a rubber bag individually to form a paint ball. Theinner of the lead pipe 114 is installed a first recoil spring 117, thefirst recoil spring 117 can be a spiral spring in the embodiment as thefigures showed.

Because the mouthpiece 130 is made of a soft material such as plastic orrubber, a sleeve 160 is inserted in the inner surface of the tubularpart 132 of the mouthpiece 130 for assembling the tubular part 132 ofthe mouthpiece 130 with the grip 110 while the sleeve 160 is made of ahard material such as aluminum or aluminum alloy. The pushing bar 150has a retainer flange 154 and a second contact part 152, and one end ofthe said first recoil spring 117 is contacted with the retainer flange154 and another end of the said first recoil spring 117 is contactedwith the sleeve 160. Moreover, the second contact part 152 is installedat a lower part of the pushing bar 150, and the pushing bar 150 contactsthe interference bar 122 by the second contact part 152. Theinterference bar 122 has a first contact part 122 a that the upper partthereof can be contacted with the second contact part 152 and the lowerpart thereof can't be contacted with the interference bar 122.

The said blowgun 100 further has a second recoil spring 118. One end ofthe second recoil spring 118 is connected to the extended bar 124 of thetrigger 120, another end of the second recoil spring 118 is connected tothe grip 110. The blowgun 100 further has a first holding part 142 and asecond holding part 144. Each of the first holding part 142 and thesecond holding part 144 can be an O-ring, and the first holding part 142and the second holding part 144 are respectively installed at a groove141 and a groove 141′ of the barrel 140. Each of the groove 141 and thegroove 141′ respectively has a plurality of openings 141 a and aplurality of openings 141 a′ (referring to FIG. 3 which omits the firstholding part 142 and the second holding part 144 to accentuate theopening 141 a and the opening 141 a′), and inner parts of the firstholding part 142 and the second holding part 144 are respectivelythrough out the opening 141 a and the opening 141 a′ to embed at thebarrel 140 and to form bosses at the inner surface of the barrel 140(referring to FIG. 5). The blowgun 100 further has a sight 146, and thesight 146 is installed at the top surface of the rear part of the barrel140 for sighting.

The following will describe an operation of the blowgun 100 of thepresent invention. Referring to FIG. 1 and FIG. 4A, after one of themagazines 180 is taken form the bracket 170 and the cap 184 of theloading tube 182 is taken off, the loading tube 182 which is taken caninsert into a receiver 190 and the blowgun 100 is ready for fire.

Then, referring to FIG. 4B, after the trigger 120 is pressed, theinterference bar 122 pushes the second contact part 152 to move. Thesecond contact part 152 brings the pushing bar 150 to approach themouthpiece 130 because the second contact part 152 is firmed at thepushing bar 150. At the same time, the pushing bar 150 compresses thefirst recoil spring 117, and a space is formed between the pushing bar150 and barrel 140 and defines the chamber 119. Moreover, referring toFIG. 4C, the lowest bullet 70 in the loading gate 112 falls into thechamber 119 when the space of the chamber 119 becomes almost equal tothe bullet 70.

Referring to FIG. 4D and FIG. 4E, after the bullet 70 falls into thechamber 119, the lower of the first contact part 122 a of theinterference bar 122 contacts the guiding flange 116, and the firstcontact part 122 a of the interference bar 122 releases the pushing bar150 and moves along the surface of the guiding flange 116. Then, thefirst recoil spring 117 which is compressed releases elastic potentialto bring the pushing bar 150 to approach the barrel 140, and the bullet70 is pushed into the barrel 140 by the pushing bar 150 (showed as FIG.4E).

Besides, if release the trigger 120 in a state as FIG. 4D shows, thesecond recoil spring 118 which is compressed returns the trigger 120 toa initial state as FIG. 4A shows.

Referring to FIG. 4E and FIG. 5 which shows a schematic view of theinner of the barrel 140 which has a bullet 70 inside, after the bullet70 is pushed into the barrel 140 by the pushing bar 150, the bullet 70is positioned between the first holding part 142 and the second holdingpart 144. The more particular embodiment is that the bullet 70 is gripedby the first holding part 142 and the second holding part 144. After thebullet 70 is positioned in the barrel 140, blowing the mouthpiece 130can accrue a higher pressure to make the bullet 70 pass the firstholding part 142 and loose off from the barrel 140.

Although the pushing bar 150 pushes the interference bar 122 by thesecond contact part 152 in the above embodiment, the second contact part152 can easily be replaced with the mechanism topology. For an example,the pushing bar 150 has a recess (not showed in the figures) whichreplaces the second contact part 152, and the interference bar 122 cancontact to the recess. Besides, the installation of the bracket 170, themagazine 180, and the receiver 190 makes convenient for supplying thebullets 70, but these structures are optional and depend on demand inuse or any other substitute which can replaced them with the mechanismtopology.

In conclusion, the blowgun 100 of the present invention can be operatedto fire bullets 70 by blowing and is safer than paintball guns of priorarts so that the blowgun 100 of the present invention is more adaptableto children. Besides, the trigger 120 can bring the pushing bar 150 to aposition until a bullet 70 is allowed to be loaded in the chamber 119,and the pushing bar 150 can automatically push the bullet 70 into thebarrel 140 by the first recoil spring 117. Therefore, the bullet 70 isready to fire as the trigger 120 reaches the position where the bullet70 is loaded in the chamber 119 so that the responding time is short andis helpful to the user.

Moreover, because of the resistance caused from the first holding part142, the bullet 70 is held between the first holding part 142 and thesecond holding part 144 until the pressure due to blowing of themouthpiece 130 is higher enough. Therefore, the blowing pressure whichcan fire the bullet 70 must be over a minimum value so that the bullet70 shot from the barrel 140 has high speed and the amusement of the wargame is kept. Besides, the first holding part 142 and the second holdingpart 144 can keep the bullet 70 at the barrel 140 firmly, and the firstholding part 142 and the second holding part 144 also increase air sealof the interface between the barrel 140 and the bullet 70.

While the preferred embodiment of the invention have been set forth forthe purpose of disclosure, modifications of the disclosed embodiments ofthe invention as well as other embodiments thereof may occur to thoseskilled in the art. Accordingly, the appended claims are intended tocover all embodiments which do not depart from the spirit and scope ofthe invention.

1. A blowgun, which is used for firing bullets, comprising: a grip whichis comprised a loading gate, a lead pipe, and a guiding flange; atrigger which is installed slidably at the grip, and a interference baris installed at a part of the trigger, which is formed in the inner ofthe grip; a mouthpiece which is comprised a tubular part at one endthereof and a conical part at another end thereof; a barrel; a pushingbar which is installed slidably in the lead pipe and can be slid betweenthe mouthpiece and the barrel; and a first recoil spring which isinstalled in the lead pipe; wherein the lead pipe is formed at the rearof the barrel and through inner of the grip; the loading gate isconnected to the lead pipe; the guiding flange is installed in the grip;the tubular part is coupled together with the lead pipe; and during aninterval the trigger being compressed, the interference bar of thetrigger brings the pushing bar to approach the mouthpiece and tocompress the first recoil spring until a chamber which is connected tothe loading gate between the pushing bar and the barrel is enough forcontaining the bullet, and then the first recoil spring returns andbrings the pushing bar to approach the barrel and to push the bulletinto the barrel while the interference bar contacts with the guidingflange and releases the pushing bar.
 2. The blowgun recited in claim 1,wherein the pushing bar comprises a second contact part by which thepushing bar contacts with the interference bar.
 3. The blowgun recitedin claim 2, wherein the interference bar comprises a first contact partthat an upper part thereof can be contacted with the second contact partand a lower part thereof can't be contacted with the interference bar;and during the interval the trigger being compressed and when thechamber is enough for containing the bullet, the lower part of theinterference bar contacts with the guiding flange.
 4. The blowgunrecited in claim 1, wherein the blowgun further comprises a secondrecoil spring which is installed in the grip for opposing beingcompressed of the trigger.
 5. The blowgun recited in claim 1, whereinthe blowgun further comprises a first holding part which is installed inthe barrel for blocking the bullet at the rear of the first holding partin the barrel.
 6. The blowgun recited in claim 5, wherein the blowgunfurther comprises a second holding part which is installed at the rearof the first holding part in the barrel for restricting the bullet inthe barrel between the first holding part and the second holding part.7. The blowgun recited in claim 6, wherein the front end and the rearend of the bullet in the barrel respectively are contacted with thefirst holding part and the second holding part tightly.
 8. The blowgunrecited in claim 6, wherein the first holding part and the secondholding part both are O-rings.
 9. The blowgun recited in claim 5,wherein the first holding part is an O-ring.
 10. The blowgun recited inclaim 1, wherein the blowgun further comprises a sleeve which isinstalled at a front part of the mouthpiece and made of aluminum. 11.The blowgun recited in claim 1, wherein the blowgun further comprises abracket, which is installed on the barrel, and at least a magazine,which is installed on the bracket and contains a plurality of bullets.12. The blowgun recited in claim 11, wherein the blowgun furthercomprises a receiver which is installed on the loading gate andconnected with the loading gate for holding the magazine.